Newest technology from Aluna! Aluna has replaced the old fashion chain with a new type of shaft drive. One of the advantages of having a shaft drive instead of a chain is that you avoid the hassles of a loose chain and oil on your pants while bicycling. Alunas shaft drive is produced by the leading shaft drive company, Jaan, whose shaft drive products are designed to create less friction than a brand new chain. This in combination with the latest in Shimano inter 8 gearing system, creates a synergy, that enables both smooth and reactive riding. In addition, this bicycle lives up to the highest standards in regards to materials used in the construction of the frame (aluminum 7005), rims etc... All the while, the rider will benefit from riding a unisex bicycle that is refined through Danish design yet aggresive and playful.